Improvement in nut-locks



A. G'. an R. H'EINLE,

Nut-Lock.

Patented Jan. 1,

` malate/wy UNITED STATES'PATENT OFFICE.

ALBERT e. HEmLE-AND ROBERT HEWLE, oEPITTsBuRG, rENnsYLvANIA.

IMPROVEMENT IN NUT-LOCKS.

i specification fol-ming part of Letters Patent No. 198,740, dated January i, 1ere applicati@ ined t March 31,1877.

To all whom it may concern: t i row, it may be screwed into the nut until all e Be it known that we, ALBERT G. HEINLE the parts are firmly drawn together. and ROBERT HEINLE, of Pittsburg, in the The bolt-T is constructed with a series of county of Allegheny and State of Pennsyllongitudinal shallow grooves around its neck, vania, have invented a new and useful Imunderneath its headyand the Washeris formed provement in Bolts and Nut-Locks, which inwith an inclined recess on one side of' its hole, vention will be readily understood from the into which a short, loose, round pin, i, is following description, taken `in connection placed, so that when the bolt is screwed up with the accompanying drawings,`wherein any attempt in a reverse direction will cause Figure l represents an end view of a railthe longitudinal grooves in its neck to enway rail having' applied thereto our imgage with theloosepin z', and carry it down proved fish-bars, bolt, and nut-lock. Fig. 2 the incline s of the `eccentric hole, and so represents a transverse vertical section ofthe thoroughly wedge the parts together as to same; Fig. 3, a front view and plan of our bring about a complete and perfect locking of contrivance, the head of the bolt being dethe bolt. e tached to exhibit the means by which the To accomplish the object of our invention, `bolt is prevented from turning back or unwe have luted the neck of the bolt, yet the screwing. e same object my be obtained by having it Our invention consists of an improved square, triangular, or even oval, in transverse mode ot' securing the bolts land nuts used in section, or in fact any other form than that connection with side plates or iish-bars, as of a perfect round 5 and the eccentric hole, or applied to hold the adjacent ends ot' railwaythe hole with an incline, after the manner rails. o shown, may be made in the fish-bar, to avoid Heretofore bolts used for such purposes the use of a washer; or in case they are both were prevented from turning on their axis used, a thin metallic plate may be interposed and unscrewing by reason of their shape and between the washer and iish-bar, as a better the shape of the holes through whichl they security for and to prevent any end play and were made to pass, and `the nuts rotated on consequent displacement of the loose pin t'. the screw of the bolts, as in ordinary cases, Having thus briefly described the nature of and various means have been employed to our invention, we wish it distinctly underprevent such nuts from unscrewing, and constood that we .do not limit ourselves to the sequently the bolts from getting loose. precise condition or shape of parts, as these In our invention the side plates or flshmay be varied without departing from the bars a a, like others in use, have holes spirit of our invention; but `punched through them for the reception of We claimbolts, &c., but differ in having the face or l. As a means of securing the side plates outside recessed, which recess extends the or fish-bars on the adjacent ends of railwayentire length of the plate, and from one-` rails, the grooved necked bolt T, in combina eighth to a quarter of' an inch in depth, and tionwith the loose pin t' and eccentric hole s of a width equaling vthe breadth of the nut b in the washer (l, substantially in the manner employed on one side, andthe thick washer shown and described. 4C on the opposite side. Into their recesses 2. A bolt, T, having a neck or shank of the nuts and washers lit loosely, but are preiiuted or other described irregular shape in vented from turning therein by the Walls of cross-section, in combination with loose rotatsuch recesses. e ing pin t' and eccentric recess s in the wall of Tobind the parts together, one shbar is the hole through which the bolt-neck passes, placed on each side of the rail A, and with substantially as set forth.

their respective recesses outward. Into one of these is placed the nut b, and in the other HEINLE' the thick washer C., The bolt is then passed through the Washer, sh-bars, and rail, till Witnesses:

its point enters the nut, when, by rotating JosIAH W. ELLs,

the bolt inthe direction indicated by the ar- RoBERT S. SILL. 

